torqueless
Senior Retro Guru
Re:
Forget 'bike' and 'gears' for a moment.
Imagine just a loop of chain engaged with a chainring.
The chain has one clearly marked link, sitting on one of the chainring teeth, which we will call: "tooth 1"
As you revolve the chainring, the marked link leaves "tooth 1", descends down one side of the catenary, reaches the bottom, and ascends up the other side of the catenary, until it reaches the chainring again.
Unless the number of links in the chain is an exact multiple of the chainring tooth count, the marked link will now occupy a different tooth from "tooth 1".
How far around the chainring that different tooth is from "tooth 1" is entirely dependent on the number of links in the chain.
That remains true regardless of any sprocket you might put in the loop of chain.
...It also remains true when you re-attach all that stuff to your bike..
Well, I admitted to being baffled by this simple system, but I got what LongboardSi was saying immediately.Did that first time around, just read them again, still confused
Forget 'bike' and 'gears' for a moment.
Imagine just a loop of chain engaged with a chainring.
The chain has one clearly marked link, sitting on one of the chainring teeth, which we will call: "tooth 1"
As you revolve the chainring, the marked link leaves "tooth 1", descends down one side of the catenary, reaches the bottom, and ascends up the other side of the catenary, until it reaches the chainring again.
Unless the number of links in the chain is an exact multiple of the chainring tooth count, the marked link will now occupy a different tooth from "tooth 1".
How far around the chainring that different tooth is from "tooth 1" is entirely dependent on the number of links in the chain.
That remains true regardless of any sprocket you might put in the loop of chain.
...It also remains true when you re-attach all that stuff to your bike..